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← Revision 3 as of 2010-02-17 09:43:06 → ⇥
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# GEOMETRY KEYWORDS - PIXEL # GEOMETRY KEYWORDS - PIXEL Info for Bounding Box
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 . CRVAL1 = [left corner of bounding box]  . CRVAL1 = [center of bounding box]
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 . CRVAL2 = [lower corner of bounding box]  . CRVAL2 = [center of bounding box]
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 . QUALITY = INT
 . B0, link, "B0", sourcerec		  . PATCHQUAL = INT
 . B0, link, "B0", sourcerec - '' note - HPLT_TAN - fix?''

Patches_Found Data Series

Feature identification software will identify a small number of solar active region patches using a line-of-sight magnetogram and an intensity image. This data series contains information for each time step during the SDO mission. It provides geometric mapping info and a bitmap image, pointers to the image data, and a number of keywords computed for the patch.

# SERIES INFO

  • DATANAME = Patches_Found
  • Retention = 20
  • Archive = 1
  • Primekeys = T_REC, PNUM

# PRIME KEY INFO

  • T_REC, TIME, Slotted
  • T_REC_STEP = 12MIN
  • T_REC_EPOCH = 1976.12.31_23:59:45.000_UTC

  • PNUM, INT - One entry for each active region identified at this time step

# GEOMETRY KEYWORDS - PIXEL Info for Bounding Box

  • IMAGEX0, INT [x-pixel of left edge of bounding box]
  • IMAGEY0, INT [y-pixel of lower edge of bounding box]
  • # other corner of bounding box computed from segment dimensions
  • IMAGEX1, INT [x-pixel of right edge of bounding box]
  • IMAGEY1, INT [y-pixel of upper edge of bounding box]

# COORDINATE KEYWORDS

  • CROTA2 = link,"CROTA2",sourcerec
  • CTYPE1 = "hpln_tan"
  • CRPIX1 = 1
  • CRVAL1 = [center of bounding box]
  • CUNIT1 = "arc sec"
  • CDELT1 = 0.5 [nominal HMI pixel]
  • CTYPE2 = "hplt_tan"
  • CRPIX2 = 1
  • CRVAL2 = [center of bounding box]
  • CUNIT2 = "arc sec"
  • CDELT2 = 0.5 [nominal HMI pixel]

# OTHER KEYWORDS FOR PATCH

  • PATCHQUAL = INT

  • B0, link, "B0", sourcerec - note - HPLT_TAN - fix?

  • ARP_AREA, DOUBLE
  • I_MIN, FLOAT
  • # OTHER INFO

# SEGMENT INFO

  • data:arp_map, char, vardims, 2, 100, 100, fitz, 0, 1,"TXT" - BITMAP of ACTIVE REGION

#LINK INFO

  • link: sourcerec, "HMI.Blos", dynamic
  • link: sourceint, "HMI.Ic", dynamic

JsocWiki: PatchesFound (last edited 2013-05-01 04:35:25 by localhost)